1. Mr. Green works as the art teacher at Hamburg Summer Day Camp. Six hundred

PLEASE HELPPP (NO LINKS) (NO LINKS) (NO LINKS)

rosijanka [135]

Answer:

B, B, C

Step-by-step explanation:

1.

Shirts cost $20 each and ties cost $12 each.

Expression for the cost:

20s + 12t

Correct choice is B

2.

An expression that represents 40% of a number is:

40*n/100 = 0.4n

Correct choice is B. False

3.

t = -2, x = 3 and z = 5

4z + 3x − t =
4*5 + 3*3 - (-2) =
20 + 9 + 2 =
31

Correct choice is C. 31

3 0

3 years ago

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A convex parabola is shown in a coordinate plane. The parabola connects the points left-parenthesis negative 4.5 comma 12 right-

spayn [35]

Since the parabola is connecting the points, it means that the points given are on the parabola or that the points are solutions of the parabola. Thus, when we substitute the points into the function, we should end up with the correct y-value.

To find the correct choice, let's test a point. An easy point to test I believe would be (-3, 0) because we should be getting 0 as a y-value. Let's test:

$A. (- 3 - 3)(3 + 4) = -42$

$B. (-3 + 3)(-3 - 4) = 0$

$C. (-3 + 2)(-3 - 4) = 7$

$D. (-3)(-3 + 12) = -27$

We can see that Choice B is the correct function, because it produces 0 when we substitute $x = - 3$ . Thus, Choice B, or (x + 3)(x - 4) is the answer.

8 0

3 years ago

Esther wants to know if the number of words on a page in her language arts book is generally more than the number of words on a

kykrilka [37]

Answer: The correct answer is "No, because there is a lot of variability in the language arts book data."

The mean of the language arts book is higher than the mean of the social studies book, however, there is a lot of variability in the language arts book. This means that the language arts book could actually be lower than the social studies book. It is not likely but it could happen.

7 0

3 years ago

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Difference Between ten and a number is the sum of eight and number Help !!?

Murrr4er [49]

Answer:

x = 1

Step-by-step explanation:

We will represent the unknown number as x

10 - x = 8 + x

Add x to both sides

10 - x + x = 8 + x + x

10 = 8 + 2x

Subtract 8 from both sides

10 - 8 = 2x

2 = 2x

Divide both sides by 2

1 = x

x = 1

3 0

3 years ago

Find the annual percent increase or decrease that y = 0.35(2.3)x models. (1 point) A.230% increase B.130% increase C.30% decreas

ipn [44]

Answer: B. 130% increase

Step-by-step explanation:

Given function : $y=0.35(2.3)^x$

If x represents the number of years, we have to determine the two values of y in consecutive terms to determine if the value of y increases or decreases after a year.

This function is equivalent to the exponential growth function

$y=A(1+r)^x$ , where A=0.35 and (1+r)=2.3, [A= initial amount , r=annual percent increase]

Thus,

$\Rightarrow\ r=2.3-1\\\Rightarrow\ r=1.3\\\Rightarrow\ r=1.3\times100\%=130\%$

Hence, the annual percent increase is 130%.

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3 years ago

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